Steel fiber ultrahigh performance concrete (UHPC) and rubber ultrahigh performance concrete (UHPC) adopt the methods of “rigidity overcomes rigidity” and “softness overcomes rigidity,” respectively, to resist the abrasion and cavitation erosion caused by water flow carrying large solid particles. The above two have been applied in engineering successfully, but there are differences in material properties, mechanical properties, and microstructures. In this study, we will analyze the difference of abrasion resistance performance of the above two kinds of UHPC, in terms of, for example, compressive strength, abrasion resistance strength, abrasion rate, and microstructure in different ages, so as to provide a new material and method. The results indicate that the steel fiber UHPC compressive strength is higher than that of rubber UHPC (containing 1% steel fiber), and the abrasion resistance performance of steel fiber UHPC is lower than that of rubber UHPC (containing 1% steel fiber) when the rubber content is 10% and 12.5%. With the increase of steel fiber content, the compressive strength of steel fiber UHPC is not significantly improved, and the influence of water-binder ratio (W/B) on UHPC is higher than that of steel fiber content. With the increase of rubber content, the rubber UHPC compressive strength decreases, abrasion resistance strength decreases, and abrasion rate increases. The cement paste-aggregate interface transition zone (ITZ) of steel fiber UHPC and rubber UHPC has few internal voids and high compactness; however, the ITZ of steel fiber UHPC is denser than that of rubber UHPC.

中文翻译：

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钢纤维UHPC和橡胶UHPC的水磨蚀实验研究。

钢纤维超高性能混凝土（UHPC）和橡胶超高性能混凝土（UHPC）分别采用“刚性克服刚性”和“柔软克服刚性”的方法，以抵抗载有大颗粒固体的水流引起的磨损和空蚀。以上两种已成功应用于工程中，但材料性能，机械性能和微观结构存在差异。在这项研究中，我们将分析上述两种UHPC耐磨性能的差异，例如在不同年龄段的抗压强度，耐磨强度，磨损率和微观结构方面，以提供新的材料和方法。结果表明，钢纤维UHPC的抗压强度高于橡胶UHPC（含1％钢纤维）的抗压强度，而钢纤维UHPC的抗磨性能低于橡胶UHPC（含1％钢纤维）的抗磨性能。橡胶含量为10％和12.5％。随着钢纤维含量的增加，钢纤维UHPC的抗压强度没有明显提高，水基比（W / B）对UHPC的影响大于钢纤维含量。随着橡胶含量的增加，橡胶UHPC的抗压强度降低，耐磨强度降低，磨损率提高。钢纤维UHPC和橡胶UHPC的水泥浆-骨料界面过渡区（ITZ）内部空隙少，致密性高。然而，